Mortuary, Narcomoeba, Undercity Informer, and Mana Echoes

Prerequisites

• Mortuary on the battlefield
• Narcomoeba on the battlefield
• Undercity Informer on the battlefield
• Mana Echoes on the battlefield
• available

Steps

1. Activate Undercity Informer by paying and sacrificing Narcomoeba
2. When Narcomoeba dies, Mortuary triggers, putting Narcomoeba on top of your library from your graveyard
3. Resolve the Undercity Informer ability, causing you to put Narcomoeba into your graveyard from the top of your library
4. Narcomoeba triggers, returning itself to the battlefield from your graveyard
5. When Narcomoeba enters the battlefield, Mana Echoes triggers, adding at least
6. Repeat
7. If you control at least one other Illusion, this combo will net infinite colorless mana

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite self-mill